I like the element of time travel; the dinosaurs world being set in a more modern setting alongside humans. Or maybe a few characters from the Great Valley being sent to the 21st century and the characters would be anthropomorphic and wear clothing.

Another type I like is backstories for secondary characters like Littlefoot’s grandparents from when they were young as well as the rest of the gang’s parents. Cera’s dad especially since I have ideas for his backstory; as stated in some of my stories; he suffers the loss of a sibling, although I stated that he also has two sisters, his father has abandoned the family, he loses his mother and has to be raised by his grandparents along with his sisters.

1.) Ichy and Dil
2.) Ozzy and Strut
3.) Bron and Littlefoot’s mother (though not as big as the two sets above)
4.) The Old One and Doc (though again, not as big as the first two sets.)
5.) Cera’s first mother and her siblings, and, yes, her father, and her grandfather too.
6.) Sharptooth and his family
7.) Spike (to some degree, as it finally showos his parenst and a long lost aunt.)
8.) Shorty
9.) Pterano (or more of one anyway)
10.) Chomper (yes, we saw him hatch, but there’s more, of course)
11.) Ruby (Yes, more on her, and well needed, as LBT doesn’t develop her much)
12.) Littlefoot’s grandparents (at least we’ll learn how they met)
13.) Guido
14.) The Great Valley itself

As for new places, I have:

1.) Hunter Valley (a Fast Biter place)
2.) the Desert Oasis (a place in the desert that has an oasis that has a special kind of Tree Sweet not found in the Great Valley.)
3.) The Valley of Sharpteeth (a Great Valley clone, only inhabited by Sharpteeth. It also has many plants that the Great Valley doesn’t have.)
4.) The White Mountains (a mountain range at least two days from the Great Valley.)